package cn.edu.ctbu.labtest.webapi;

import cn.edu.ctbu.labtest.core.PageUtils;
import cn.edu.ctbu.labtest.domain.Student;
import cn.edu.ctbu.labtest.service.StudentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.*;
import org.springframework.data.repository.NoRepositoryBean;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import java.util.List;


@NoRepositoryBean
@RestController
@RequestMapping("/webapi/student")
public class StudentRestController {

    @Autowired
    private StudentService studentService;


    /*
    * 读取的url:/webapi/student/list
    * @return
    * */
    @GetMapping("/list")
    public List<Student> getAll(){

        List<Student> students=studentService.findAll();
        return students;
    }

    /*
    * 分页读取全部内容
    * @return
    * */
    @GetMapping("/getbypage")
    public PageUtils getByPage(@RequestParam (value ="page",defaultValue = "0") Integer page,
                               @RequestParam(value = "size",defaultValue = "10") Integer size,
                               @RequestParam(value = "name",defaultValue = "") String name){

        /*
        * 按id排倒序
        * */
        Sort sort=Sort.by(Sort.Direction.DESC,"id");

        Page<Student> studentPage;

        if (StringUtils.isEmpty(name)){
            Pageable pageable=PageRequest.of(page,size,sort);
            studentPage=studentService.findAll(pageable);
        }else{
            Student student=new Student();
            student.setName(name);

            Pageable pageable= PageRequest.of( 0,10,sort);


            ExampleMatcher matcher = ExampleMatcher.matching()
                    .withMatcher("name",ExampleMatcher.GenericPropertyMatchers.contains());
            Example<Student> example = Example.of(student, matcher);


            studentPage =studentService.findAll(example,pageable);}

        PageUtils pageUtils=new PageUtils(studentPage.getContent(),studentPage.getTotalElements());

        return pageUtils;
    }




    /*
     * 读取的url:/webapi/student/get/id
     * @return
     * */
    @GetMapping("/get/{id}")
    public Student get(@PathVariable Long id){

        Student student=studentService.getById(id);
        student.setPassword("");

        return student;
    }



    /*
    * 新增
    * */
    @RequestMapping("/insert")
    public Student insert(Student student){

        Student student1=studentService.insert(student);

        return student1;

    }



    /*
    * 更新
    * */
    @PutMapping("/update")
    public Student update(Student student){


        Student oldstudent=studentService.getById(student.getId());/*读取旧的数据*/

        if(StringUtils.isEmpty(student.getPassword())){
            /*若无新密码就用旧密码*/
            student.setPassword(oldstudent.getPassword());
        }

        student=studentService.update(student);

        return student;
    }



    /*
     * 删除
     * */
    @DeleteMapping("/delete/{id}")
    public void delete(@PathVariable Long id){

       studentService.delete(id);


    }

}
